Bearish flow noted in Occidental Petroleum(OXY) with 5,283 puts trading, or 4x expected. Most active are 3/31 weekly 65 puts and Aug-17 70 calls, with total volume in those strikes near 3,100 contracts. The Put/Call Ratio is 2.63, while ATM IV is up nearly 2 points on the day. Earnings are expected on May 4th.